"We already know there’s no safe threshold for lead exposure, and we also know that lead is toxic and a possible carcinogen even at low levels, leading to brain damage and learning disabilities," Kathy Attar, toxics program manager with Physicians for Social Responsibility, a consumer protection group, told IPS.

A letter on what we can do to help the environment, by Cindy Nguyen, Thanhnga Doan, Manjari Pedapudi, Camille Imbo and Jennifer Le, Student Physicians for Social Responsibility, USF College of Medicine.

Florida PSR steering committee member Dr. Ron Saff testified against HB 281, which would encourage the president to give approval to the pipeline project. Dr. Saff said, "We should decrease our addiction to oil, not increase it with the Keystone pipeline."